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<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script>
        let hero = {
            name: "吕布",
            level: 18,
            skill: function (age) {
                console.log(age + "天崩地裂");
            }
        }

        // 1. 获取对象属性的两种方式
        //    对象名.属性名
        //    对象名[字符串] 字符串是属性名
        console.log(hero.name);
        console.log(hero["level"]);

        // 2. 变量是 window 的属性
        var age = 22;

        // 3. window 一般省略
        console.log(age);
        console.log(window.age);

        // 4. 对象方法的调用
        hero.skill();
        hero.skill(12);

        function eat() {
            console.log("吃火锅");
        }
        eat();
        window.eat();

        // 5. 对象可以动态地添加属性(方法)
        hero.address = "艾泽拉斯";
        hero.play = function () {
            console.log('王者农药');
        }
        console.log(hero);
        hero.play();

        // 6. 属性的修改(变量的重新赋值)
        hero.name = "貂蝉";
        console.log(hero);

        // 7. 属性的删除 delete 对象名.属性名
        delete hero.name;
        console.log(hero);
    </script>
</head>

<body>

</body>

</html>